Carl Sagan

There are lots of ways to communicate what we know, but few ways to communicate what we feel. Music is one way to communicate emotions.

Carl Sagan

There are no forbidden questions in science, no matters too sensitive or delicate to be probed, no sacred truths.

Carl Sagan

To live in the hearts of others is to never die in those we leave behind.

Carl Sagan

Understanding is a kind of ecstasy.

Carl Sagan

Valid criticism does you a favor.

Carl Sagan

We are made of stellar ash. Our origin and evolution have been tied to distant cosmic events. The exploration of the cosmos is a voyage of self-discovery.

Carl Sagan

We are the first species to have taken our evolution into our own hands.

Carl Sagan

We can judge our progress by the courage of our questions and the depth of our answers, our willingness to embrace what is true rather than what feels good.

Carl Sagan

We can’t help it. Life looks for life.

Carl Sagan

We go about our daily lives understanding almost nothing of the world.

Carl Sagan